Half to william m



(No Model.)

J. RSHAPLEY.

STEAM GENERATOR.

No. 320,446. PatentedJune '16, 1885.

7 Fig.2

N. FFIERS. Phoiv-Ufiwgnpher. Washington. D. C

1 ,UNITED smurf-PAT N OFFICE- AMEs n. SHAPLEY, or ,BINGHAMTON, NEW. YORK, ASSIGNOR or. onu- HALF T WILLIAM M.- SHAPLEY, or SAME PLACE.

- *TEAM GENERATOP SPECIFICATION formingfpart of Letters Patent lids 20,446, dated June 16, 1885.

Application filed August 4,1884. (No model.)

To all whom, it may concern: 1

Be it known that 1, JAMES E. SHAPLEY, of

Binghamton, county .of Broome, State of New York, have invented an Improvement in 5 Steam-Generators, of which the-following description, in connection with the'accoinpanyin g drawings, is a specification, like letters on the drawings representing like parts.

My invention relating to steam-generators, especially intended to be used in connection with small or portable engines, is intended as an improvement on the generator or boiler shown in vLetters Patent No. 147,437, dated February 10, 1874, to which reference may be had. The said patent showed a-steam-generator having a conical fire-box inclosed within a boiler, and having lateral fluesnear the top of the fire-box opening'into an-annular chamber, from which descending flues pass through the water-space at the side of the fire box into an annular flue at the base of the boiler surrounding the ash-pit, from which annular flue the products of combustion were led to a suitable stack or chimney.

The present invention consists. in a. generator constructed substantially like that shown in the said patent, combined with an outer shell or casin g inclosing the entire generator, and having a stack or chimney at its upper end, so that the products of combustion passchimney leading from the lower end of the boiler, pass upward again within the jacket and around the boiler, imparting additional heat thereto.

The invention further consists in various details of construction, by which the fines and boiler are rendered easily accessible for the purposes of cleaning.

Figure 1 is a front elevation of a steam-generator embodying this invention; Fig. 2, a vertical section thereof, and Fig. 3 a detail to be referred to.

The entire apparatus is shown as supported on a base, a, which may be of cast-iron, havin g an annular rib, a, which receives the end of the shell b, containing the grate c, and constituting the fire-box or combustion-chamber 0 of the furnace. The portion of the shell b below the grate is shown as cylindrical, and

constitutes ihe ash-pit, which is accessible through the door (1, Fig. 1, while the portion above the' said grate is tapering or conical, as

in the patent referred to, and is closed atits upper end by a crownsheet, e. The fire-chamber is surrounded and inclosed by a shell, f,

connected-at its lower end by an annular piece, /",with the shell Z), and a short distance below the upper end of the shell I), connected by an annular piece, f, with the lower end of a drum, g, surmounting the upper end-of the fire-box. A tight chamber is thus formed between the plates b, f, f, f and g, which con stitutes the boiler, the lower portion of which, surrounding the said fire-chamber b, is to be filled with water, and the upper portion, 9,

forming a clear space or dome for steam.

The top plate, g, of the drum or boiler and the crown-sheet e of the fire box are connected by stay-bolts h. The plate f constitutes a shoulder in the outside of the boiler, upon the outer edge of which is placed a ring, c,

which maybe ofcast-iron, having arabbet, i,

at its upper end, which receives the lower end of a series of curved covers, 70, the upper ends of which have a flange or projection engaged, and supported by afiange, m, upon the shell 9.

The joints between the cover is and flange m and ring 71 may be ground so as to fit .tightly, and the said cover and ring inclose an annular flue or chamber surrounding the lower end of the drum 9 below the level of the crown-sheete of the fire-box.

A series of short lateral fines, ii, open from the upper end of the fire-box into the said annular chamber, and a series of fines, 0, passin g from one to the other of the annular pieces f f 2 through the water-space between the sheets f and b, connect the said annular chamber with the space below the boiler surrounding the ash-pit.

The apparatus thus far described is sub stantially like the corresponding parts in the patent referred to but in the said patent the vertical flues 0 opened into an annular flue surrounding the ash-pit, from which the products of combustion were conveyed without having further heating effect upon the boiler. In the present invention the boiler and ashpit are surrounded by a shell, p 1919 inclosin g a space between it and the shells f g, and rest- IOC ing at its lower end upon the base a, which has a suitable groove or ledge-to receive it. The shell 19 is cylindrical as far as the upper end of the shell f, and is surmounted by a tapering or conical portion, 1) p inclosing the steam-dome g, .and covered bya cap, 19 from which the stack or chimney p discharges the products of combustion. The upper portion, 19 of the outer shell. with the cap and stack, are supported by brackets 1", connected with the sides of the dome g, and the portion is provided with handles 19 by which it may be raised upward or around the portion 12 to afford access to the covers 70 of the annular chamber communicating with the flues a 0.

When in its lower or normal position, the portion p of the outer shell or jacket is sustained by the portions 19 p owing to the taper thereof, the said portion lapping over the said portions 121) to make tight joints between them, and the portion 12 is provided with holding devices (shown as spring-hooks t) for supporting the movable portionor cover 1) when raised to afford access to the covers lo, and by removing the said covers to the flues a and 0.

The outer shell, 10, may be provided with openings u, affording access to the space surrounding the ash-pit for cleaning the same, and the said shell is provided with funnelshaped portions w, extending to the. sides of the boiler around plugs to, which thus afford access to the interior of the boiler for rem0ving sediment or other purpose, the said plugs 1. The fire-box, and boiler inclosing it having internal flues near the top of the fire-box,

and the annular chamber surrounding the boiler and communicating with said flues, and

having the curved covers Zc,=for permitting access to the flues entering said chamber, combined with the flues extending downward from said chamber through the boiler at the side of the fire-box, and I the jacket surrounding the boiler, and provided with amovable section at or near its top, with a stack or chimney to discharge the products of combustion after having passed upward between the boiler and jacket, substantially as described.

'2. The lire-box and boiler provided with flues, combined with the jacket surrounding the said boiler, having a movable section or cover, and holding devices for supporting the said cover in the position to afford access to the flues, substantially as described.

3. The fire-box and boiler and annular chamber surroundin g the boiler near the upper end of the fire-box, provided with removable covers, and fiues' communicating with the said chamber, combined with the jacket surroundin gthe said boiler, having a removable portion or cover, affording access to the covers of the annular chamber, substantially as described.

4. The fire-box and boiler provided with flues, combined with the jacket surrounding the said boiler, composed ofa cylindrical portion surrounding the lower portion of the boiler, a tapering portion surrounding the upper portion of the boiler and independently supported therefrom, and a movable portion covering the space between the said upper and lower portions, substantially as described.

5; The fire-box and boiler provided with an opening near its lower end, and a jacket surrounding the said boiler, combined with a plug. closing the said opening of the boiler, accessible fromthe outside of the jacket, which is provided with a depressedportion surround ing thesaid plug, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES E. SHAPLEY.

Witnesses:

GEORGE F. LYON, W. D. PAINTER. 

